Incubator-heating system



l1 1927 E. HANEY l INCUBATOR HEATING SYSTEM Filed. My s. 1926 2 sheets-sheet 1 gment'cw Emi Hmz@ l Oct. 1-1, 1927.'

E, HANx-:Y

INCUBTOR HATING SYSTEM FiledMay 6. A192e 2 sheets-sheetz y Patented Oct. 11, 1927.

`UNITED STATES lEARL HANEY, 0F MACOMIB, ILLINOIS.

INCUBATOR-HEATING SYSTEM.

Application led May 6, 1926. SeriaLNo. 107,215.

uses water as the medium to be circulated in order to maintain a predetermined temperature in the incubator for effecting hatching or incubation.

i The principal object of the present invention is to positively circulate the water in the incubator by bringing the water to the boiling point without, in the interim before the boiling` point is reached, raising the temperature in the incubator to a degree which would preclude or negative incubation.

Another object of the invention is to provide a water circulating system for incubators which will insure boiling of the water in a minimum period of time but which automatically causes the water to cease boiling as soon as the temperature in the incubator reaches a predetermined degree.

Other objects of the invention will be apparent from the following description of the present preferred form of the invention, wherein Fig. 1 is a horizontal sectional view of an. incubator showing a heating system constructed in accordance with the present invention in top plan associated with the incubator;

Fig. 2 is a vertical sectional view of the heater per se;

Fig. 3 is a fragmentary vertical sectional view of an incubator illustrating the application of the present invention thereto;

Fig. 1 is a fragmentary elevational View of the water circulating apparatus used in the present invention;

Fig. 5 is a horizontal sectional View of the heater and heat guide; and

Fig. 6 is an elevational view of the heat guide per se.

In the drawings, in order to illustrate the application of the present invention an incubator 7 is shown which may be of any standard or conventional design.

The heating system constructed in accordance with the present invention includes a heatingbody 8 which is adapted to be mounted above a heat element 9, in the present instance shown to be a lamp. The system also embodies a discharge or outlet pipe 10 communicating with the top of the heater and return or inlet pipes 11 communicating with the bottom of the heater. The pipes 10 and 1l communicate with a water manifold consisting of intake and return branches 12 and 13 respectively which are Ain communication with the pipes 10 and 11 respectively. Upon reference to Fig.l 3 of the drawings it will be noted that the pipe 10 communicates with a percolating filler cup 14. mounted on top of the incubator-which latter communicates with the branch 12-of the water manifold by an auxiliary discharge pipe 10. The lower ends of the return pipes 11 extend through one end of the incubator and lead into the heater 8 at diametrically opposite points. Itis to be understood that the number of outlet pipes and return pipes may be increased or diminished if desired.

The heater 8 consists of a conically shaped body including outer and inner walls between which a water compartment 15 is providcdthe walls being held in spaced relation by studs 16 or other suitablespacing elements. 'I he space between these walls is very narrow so that only a very vsmall volume of water is carried in the heater. The outer wall of the heater is provi-ded near .its lower end, and at diametrically opposite points, with nipples 17 which are internally screwthreaded to receive complemental threads on the ends of the return pipes 11. The water may be introduced into the system through a cap 18 detachably mounted on the cup 14 and is permitted to ilow through the cup into the branch 12 of the water manifold, thence through the branches 13 and ultimately into the bottom of the heater through the return pipes 11. When the water is heated, in a manner hereinafter set forth, it expands through the pipe 10 and into kthe cup 14; in anjapparent manner.

The heating element is so arranged that the heat generated thereby is directed into the heater body for impingement against the inner wall of said body. In the present instanceI the element 9 consists of a lamp the chimney of 1which projects into the heater body so that the heat emanating from the lamp will be carried upwardly through the heater body impinging against the inner wall of the latter so as to heat the water contained in the compartment 15.

In order to control the heat a conventional form of thermostatically operated damp er apparatus, generally designated 19, is provided. The damper apparatus may be mounted on top of the incubator, as illustrated in the drawings and includes a pendant damper plate 2O which is arranged to lie above the heater body 8. The damper in diameter than the interior diameter of the heater body 8. The flue is equipped Withl ribs 22 the upper terminals of Which are enlarged to provide abutments 2 3 Which'. rest upon; the top of the heater body 8, as ill-us,-

trated to advantageA in. F ig. 2 of the draxvings; By providing the abutments 2B it will be apparent that the damper plate .2O is; prevented from coming in contact with theheater body but may rest upon the top of.; the exhaust flue. When the damper is elevated above the flue, as shown in lg 3, the PlOducts of combustion from the heating element 9 are permitted topass upvvardr ly through, the center oft the flue. ,Vhen, li'ovvever7V the damper plate is superimposed on the top or the ilue and the abutments, the products ot combustion are compelled to pass between the inner uall oft the heater bodyiand the outer periphery or the lue2l, ultimately leavingA the heater body between the flanges 23;

ln; use olfz this device, after Water has been .placed the system and the lamp is bkurning, the heat generated bythe lamp Will inipingeagainst the1 inner- Wall of the heater body toLcause boiling of theuater in the compartment 1,-5 and this positively etleets circulation, of: the Water through the outlet pipe 1Q, pelolatngcup, lt and Water, manifold iny the incubator from which latter it flows tlilough the return pipes ll, back into the heater body. This cycle of operation is etlected While the damper plate 20 rests upon the top of the exhaust flue. As soon, however,` as the desired, temperature in the incubator is attained, the damper plate 2O isautomatically elevated, in a manner Well known; iny the` art, so; that the. products of combustion are their permitted to pass centnally.Y through the luc 2lf. lt isusuallyaccepted: in the art that the heating tempera ture for proper incubation inthe incubator is about 11030 E. and in order to produce this.- temperature it is nfuzessary to` heat the water, to approximately 150O F. Since the boiling pointo Water is approximately 212 F., it is apparent'that Where the Water is heated to only 150 F. that in effect Very little, if' in fact any, circulation of Water is effected. Heretofore, it has not been feasible to heat the Water beyond a temperature of 1500 E. because by so doing the temperature in the incubator would be corresroneioelv iereasd-. tloveveri it has been found that in: the present invention the water, may; be heated to the boiling PQnt es,- peditiously andl Without unduly increasing the temperature Within the incubator. 'l-his result is accomplished lirst due to the narrow Water space whichis provided in thek compartment l5 of the heater body; seoond,due to an) encaseinent otheet insulation materiel around the heater body, indicated at 2li; and third by providing the particular form. of exhaust fluelierein employed lt is, olffcourse1 to be understood that vari?- ous changes may be made in? this device Withinthescope of the appended claim since l have herein illustrated and described only a; single forml ot the invention in order to illustrate the principle thereof. l

lll'loat is claimed is ln an incubator heating system, a Weller heater consisting oi; a conically shaped body including outer and inner Walls betvveen which a Water compartment is provided7 the spacing between said Walls being very narrouv sothat only a very small volume ofWator is carried in, the heater,` a heating element extending upwardly into the, Central passage. of the heaterV Atrom the bottomI there oi', an exhaust flue depending into= the centnal passage ot the heater Ytroni the top thereof and consisting of a conically shaped tubular member having on itsi exterior a` plurality of laterallyspacech longitudinal ribs the upper terminals ci' which are enlarged to prov' e abutinents adapted to rest upon the top the heat-erf, and a damper Superimposed on the top ot the saidflue and abutments.- for closingy thel central passage of the flue, said damper being movable to uncoven the said central.` passage,

ln testimony Whereot I anni my signature.

EARL, 

